/*
 * Copyright (C) 2017-2019 Dremio Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dremio.exec.physical.base;

import java.util.Iterator;
import java.util.List;

/**
 * Describes an operator that expects more than one children operators as its input.
 */
public abstract class AbstractMultiple extends AbstractBase {
  static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AbstractMultiple.class);

  protected final List<PhysicalOperator> children;

  public AbstractMultiple(OpProps props, List<PhysicalOperator> children) {
    super(props);
    this.children = children;
  }

  public List<PhysicalOperator> getChildren() {
    return children;
  }

  @Override
  public Iterator<PhysicalOperator> iterator() {
    return children.iterator();
  }


}
